Colonel John Sheppard knows it's going to be a bad day when he wakes up in a downed Jumper with a head wound and no memory of how he got there. Things don't get any better. Concussed, far from the Stargate, and with his only remaining team mate, Teyla, injured, Sheppard soon finds himself a prisoner of the local population. And as he gradually pieces the situation together he realises that his team is scattered across a tropical archipelago, unable to communicate with each other or return to the Stargate. And to make matters worse, there's a Wraith cruiser in the skies above…